Texas Instruments AFE79 Series - 2.10.37 Register 174 h (offset = 174 h) [reset = 0 h]; 2.10.38 Register 175 h (offset = 175 h) [reset = 0 h]; 2.10.39 Register 17 Ch (offset = 17 Ch) [reset = 0 h]; 2.10.40 Register 17 Dh (offset = 17 Dh) [reset = 0 h]

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Serial Interface Register Maps
2.10.37 Register 174h (offset = 174h) [reset = 0h]
Figure 2-1143. Register 174h
7 6 5 4 3 2 1 0
SPI_AGC_DSA_B
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1153. Register 174 Field Descriptions
Bit Field Type Reset Description
5-0 SPI_AGC_DSA_B R/W 0h Mission mode RXB DSA gain, settable by SPI
2.10.38 Register 175h (offset = 175h) [reset = 0h]
Figure 2-1144. Register 175h
7 6 5 4 3 2 1 0
LNA_BYP_EN_RXB
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1154. Register 175 Field Descriptions
Bit Field Type Reset Description
1-0
LNA_BYP_EN_RX
B
R/W 0h
Mission mode LNA gain settable by SPI for RxB. Normally
LSB is the one to be written. In dual LNA mode MSB is used.
2.10.39 Register 17Ch (offset = 17Ch) [reset = 0h]
Figure 2-1145. Register 17Ch
7 6 5 4 3 2 1 0
FDSA_OFFSET_VAL_B
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1155. Register 17C Field Descriptions
Bit Field Type Reset Description
6-0
FDSA_OFFSET_V
AL_B
R/W 0h
For FDSA mode, offset value(the factor which is scaled) used
in DSA value calculation. This value is scaled to derive final
DSA attenuation. This is for RxB.
2.10.40 Register 17Dh (offset = 17Dh) [reset = 0h]
Figure 2-1146. Register 17Dh
7 6 5 4 3 2 1 0
FDSA_INIT_VAL_B
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset